OoasTools

/**

  *

  *                      OOAS Compiler

  *

  *       Copyright 2015, AIT Austrian Institute of Technology.

  * This code is based on the C# Version of the OOAS Compiler, which is

  * copyright 2015 by the Institute of Software Technology, Graz University

  * of Technology with portions copyright by the AIT Austrian Institute of

  * Technology. All rights reserved.

  *

  * SEE THE "LICENSE" FILE FOR THE TERMS UNDER WHICH THIS FILE IS PROVIDED.

  *

  * If you modify the file please update the list of contributors below to in-

  * clude your name. Please also stick to the coding convention of using TABs

  * to do the basic (block-level) indentation and spaces for anything after

  * that. (Enable the display of special chars and it should be pretty obvious

  * what this means.) Also, remove all trailing whitespace.

  *

  * Contributors:

  *               Willibald Krenn (AIT)

  *               Stephan Zimmerer (AIT)

  *               Markus Demetz (AIT)

  *               Christoph Czurda (AIT)

  *

  */

package org.momut.ooas.ast.statements;

import org.momut.ooas.ast.IAstVisitor;

import org.momut.ooas.ast.identifiers.Identifier;

import org.momut.ooas.utils.exceptions.ArgumentException;

///////////////////////////////////////////////

///  Qualitative Constraints

///

public final class QualitativeConstraintStatement extends Statement

{

        public enum QualitativeConstraintOperation { Equal, Deriv, Sum, Prod, Diff }

        private Identifier m_variable0;

        private Identifier m_variable1;

        private Identifier m_variable2;

        private final QualitativeConstraintOperation m_operation;

        public boolean tag = false; // says that this is an obs assignment (important for prolog code target)

        public Identifier variable0() { return m_variable0; }

        public Identifier variable1() { return m_variable1; }

        public Identifier variable2() { return m_variable2; }

        public QualitativeConstraintOperation operation() { return m_operation; }

        public QualitativeConstraintStatement(Identifier var0, Identifier var1, QualitativeConstraintOperation op, int aline, int apos)

        {

                super (StatementKind.QualConstraint, aline, apos);

                if (op == QualitativeConstraintOperation.Diff

                                || op == QualitativeConstraintOperation.Prod

                                || op == QualitativeConstraintOperation.Sum)

                        throw new ArgumentException();

                m_variable0 = var0;

                m_variable1 = var1;

                m_variable2 = null;

                m_operation = op;

        }

        public QualitativeConstraintStatement(QualitativeConstraintStatement toCopy)

        {

                super (toCopy);

                m_variable0 = toCopy.m_variable0;

                m_variable1 = toCopy.m_variable1;

                m_variable2 = toCopy.m_variable2;

                m_operation = toCopy.m_operation;

                tag = toCopy.tag;

        }

        public QualitativeConstraintStatement(Identifier var0, Identifier var1, Identifier var2, QualitativeConstraintOperation op, int aline, int apos)

        {

                super (StatementKind.QualConstraint, aline, apos);

                if (op == QualitativeConstraintOperation.Deriv

                                || op == QualitativeConstraintOperation.Equal)

                        throw new ArgumentException();

                m_variable0 = var0;

                m_variable1 = var1;

                m_variable2 = var2;

                m_operation = op;

        }

        @Override

        public /*override*/ void Accept(IAstVisitor visitor)

        {

                visitor.visit(this);

        }

        @Override

        public /*override*/ Statement Clone()

        {

                return new QualitativeConstraintStatement(this);

        }

        public void SetVariable0(Identifier newVal)

        {

                m_variable0 = newVal;

        }

        public void SetVariable1(Identifier newVal)

        {

                m_variable1 = newVal;

        }

        public void SetVariable2(Identifier newVal)

        {

                m_variable2 = newVal;

        }

}